CN105782710B - Satellite large-volume automatic inflatable pneumatic control method based on pressure and temperature duplex feedback - Google Patents

Satellite large-volume automatic inflatable pneumatic control method based on pressure and temperature duplex feedback Download PDF

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CN105782710B
CN105782710B CN201610125365.6A CN201610125365A CN105782710B CN 105782710 B CN105782710 B CN 105782710B CN 201610125365 A CN201610125365 A CN 201610125365A CN 105782710 B CN105782710 B CN 105782710B
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temperature
product
pressure
deflation
inflation
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CN105782710A (en
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窦威
李晓阳
喻新发
王凯
孙立臣
马永强
刘一欢
周雪茜
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Beijing Institute of Spacecraft Environment Engineering
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Beijing Institute of Spacecraft Environment Engineering
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
    • G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
    • G05B13/04—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
    • G05B13/042—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators in which a parameter or coefficient is automatically adjusted to optimise the performance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0439—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0186—Applications for fluid transport or storage in the air or in space

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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Abstract

The invention discloses a kind of automatic inflatable pneumatic control methods required based on pressure and temperature duplex feedback, this method pressing force feedback control model and temperature feedback control model collective effect adjust the aperture of pressure regulation proportioning valve in automatic inflatable/air system to automatically control inflation/deflation speed, if pressure reaches the setting upper limit (lower limit) or temperature reaches the upper limit (lower limit), gas is filled and (is put) in pause, wait rise again to secure threshold (temperature), continue inflation/deflation.The present invention is during automatic inflatable/air, it does not need manual voltage regulation and controls each valve, and it does not need rule of thumb to judge whether temperature can lag to transfinite, it only needs to set corresponding parameter in systems and by program inflation/deflation and has taken into account the double requirements of pressure feedback and temperature feedback automatically, both it ensure that the result data that temperature does not transfinite, and also ensured the process data that pressure does not transfinite.

Description

Satellite large-volume automatic inflatable pneumatic control method based on pressure and temperature duplex feedback
Technical field
The present invention relates to a kind of satellite large-volume automatic inflatable pneumatic control methods, are used for satellite great Rong more particularly to one kind Product product such as tank gas cylinder (volume is at 50 liters or more) have the automatic inflatable/air of upper pressure limit and temperature feedback double requirements to control Method.
Background technique
During satellite assembly AIT (general assembly integrated and test), satellite leak detection work accounted for 10%~20% when Between, and the inflation/deflation operation of spacecraft has almost accounted for for 2/3rds time in work of hunting leak；Moreover, with space technology Continuous development, it is increasingly urgent to highly reliable, long-life satellite demand, it is following that spacecraft leak detection work is wanted It asks and is also gradually increased, wherein critically important a part is exactly the requirement to spacecraft leak detection inflation/deflation, including charge and discharge atmospheric pressure, stream Amount is accurate to be controlled, the temperature control during inflation/deflation, reliability, safety and the inflation/deflation time (effect of inflation/deflation control Rate) control etc..
Leak detection automatic inflatable/air system is to improve inspection to meet inflation/deflation demand in spacecraft sealing leak detection test process The inflation/deflation level of IT application and working efficiency are leaked, reaches unattended duty and safely and reliably runs, is realized efficiently, reliably and securely A kind of dedicated system of inflation/deflation control.The information of spacecraft leak detection inflation/deflation control can be done step-by-step in the development of the system Change, automate and standardize, eliminate manual operation bring uncertainty and quality, security risk, improves what inflation/deflation controlled Reliability, safety, while leak detection working efficiency can be largely improved, to further shorten the satellite lead time.
Currently, for satellite large-volume product automatic inflatable gas method there are mainly three types of, be respectively as follows: 1. for there is pressure The control method for the satellite large-volume inflation/deflation that bound requires, this method fully automated can be realized and be defended by delays time to control The pressure of the big volume system automatic inflatable/air process of star controls, very effective to solve the problems, such as that " pressure dummy values " control；2 needles Control method to the satellite large-volume inflation/deflation for having temperature bound to require, this method is according to workpiece temperature in the unit time Situation of change adjusts the aeration speed of workpiece, and by the upper limit and temperature upper limit of control aeration speed, to realize pair The control of workpiece temperature, it is ensured that workpiece temperature is within the set range；3. for thering is rate of pressure change and temperature bound to feed back The control method of double requirements satellite large-volume inflation/deflation, this method pass through the mathematical model and production of pressure response and temperature-responsive Product characterisitic parameter automatically controls and is arranged the rate of pressure change upper limit and temperature upper limit, and dynamic regulation ratio valve opening is realized certainly Pressure control and rate temperature change control during dynamic inflation/deflation.
Above method is directed to different satellite demands, becomes respectively for upper pressure limit demand, temperature upper limit demand and pressure Change rate & temperature upper limit demand, but has on dual for temperature, pressure during the big volume system inflation/deflation of part Satellite Product The demand of limit or lower limit, currently without corresponding automatic inflatable pneumatic control method, therefore realizes the inflation/deflation mistake under this demand Journey automatically controls, and needs to control two temperature, pressure parameters during related satellite product inflation/deflation, it is ensured that this Two parameters need to strictly be matched without departing from the upper limit or lower limit, control algolithm according to product object, and the upper limit or lower limit parameter are both needed to According to requiring to be set.
Summary of the invention
Mesh of the invention is to provide a kind of automatic inflatable pneumatic control method based on pressure Yu the requirement of temperature duplex feedback.It should Method is that the mathematical model and product characteristic parameter by pressure response and temperature-responsive automatically control electric Proportion valve outlet pressure Power, and a kind of integrative feedback and pressure regulation method of upper pressure limit and temperature upper limit dynamic regulation ratio valve opening are set.
Concrete scheme provided by the present invention is as follows:
The automatic inflatable pneumatic control method required based on pressure and temperature duplex feedback of the invention, comprising the following steps:
1) model selection and parameter setting: the inflation/deflation operating mode of satellite large-volume inflation/deflation product is set as according to temperature Degree feedback and pressure feedback, parameter setting include the blowing pressure upper limit, temperature upper limit, and wherein upper pressure limit is wanted according to actual product It asks and is set, have surplus between temperature upper limit parameter setting and actual product requirement；
2) process pipe connection is with gas source the implementation of supply measurement: connecting automatic inflatable/air system, process pipe and satellite large-volume Inflation/deflation product adds valve, and gas source is input to the gas source end of automatic inflatable/air system；
3) it opens and adds valve: valve is added according to the preset program of automatic inflatable/air system unlatching product；
4) automatic inflatable/air: pressing force feedback control model and temperature feedback control model are adjusted in automatic inflatable/air system The aperture of pressure regulation proportioning valve is to automatically control aeration speed, if pressure reaches the setting upper limit or temperature reaches the upper limit, pause is inflated, Wait rise again to secure threshold (temperature), continue inflation/deflation；
5) it closes and adds valve and automatic inflatable/air system decompression；
Wherein, above-mentioned satellite large-volume inflation/deflation product is tank or gas cylinder.
Wherein, pressure feedback Controlling model are as follows:
After inflation/deflation process starts, pressure regulation ratio valve opening is set as the upper limit (or lower limit) automatically, is deflated to product pressure It when force value (dummy values) reaches setting value for the first time, controls valve closing, inflation/deflation pause；Acquire the true pressure value P of product1, To suspend before inflation/deflation in the unit time variable quantity of (such as: in 30s) product pressure as △ PV1, with PSAs on product pressure Limit or low pressure limit, the at this time poor △ P of true pressure value and setting value1=PS-P1。
When product true pressure value reaches product pressure setting value, i.e. P1=PSWhen, inflation/deflation process terminates；When product is true Real pressure value is not up to product pressure setting value, i.e. P1< PS(deflating is Ps< P1) when, control valve is opened, and proportioning valve is kept The 80% of aperture before inflation/deflation process is suspended continues delay and carries out inflation/deflation (delay duration t1=1.1 × △ P1/△Pv1, single Inflation/deflation is s), this model of loop iteration is completed in position.
Wherein, temperature feedback control model includes first stage Controlling model and second stage Controlling model.
Wherein, first stage Controlling model are as follows:
It is T with product initial temperature0, inflation ceiling temperature is T1(deflation lower limit temperature is T2), during product inflation/deflation Real time temperature be TC, the first stage is product real time temperature value of feedback TCGreater than T0And it is less than T0+ 80% (T1-T0) when (deflate In the process, product real time temperature value of feedback TCLess than T0And it is greater than T0- 80% (T0-T2))。
After inflation/deflation starts, when the variable quantity of product temperature in the unit time is less than △ TaWhen, proportioning valve setting value starts Increase, the speed that product temperature rises (decline) is also increase accordingly；When the variable quantity of product temperature in the unit time is greater than △ Ta When, proportioning valve keeps current set value, continues inflation/deflation；When the variable quantity of product temperature in the unit time is greater than △ Tb(△Tb> △Ta) when, proportioning valve setting value starts to reduce, at this point, the speed that product temperature rises will further reduce；Work as product temperature The variable quantity for being reduced to product temperature in the unit time is less than △ TbAnd it is greater than △ TaWhen (△ Tb> △ T > △ Ta), proportioning valve is set Definite value no longer reduces, and the speed that product temperature rises will continue to reduce, when the variable quantity for being decreased to product temperature in the unit time Less than △ TaWhen, the setting value of proportioning valve starts to increase again, and so on, realize the temperature control of first stage product.
Wherein, second stage Controlling model are as follows:
Second stage is real time temperature value of feedback TcGreater than T0+ 80% (T1-T0) and be less than T1When (in deflation course, product Real time temperature value of feedback TcLess than T0- 80% (T0-T2) and be greater than T2)。
When the variable quantity of product temperature in the unit time is greater than △ TaWhen, reduce ratio valve opening (reduces a ratio every time Example valve minimum unit aperture) so that the variable quantity of product temperature in the unit time is less than △ Ta, when temperature reaches bound, close Proportioning valve, suspends inflation/deflation, and waiting temperature is risen again to T0+ 80% (T1-T0) when (T is back in deflation course0- 80% (T0-T2)), Readjustment ratio valve opening makes the variable quantity of product temperature in the unit time be less than △ Ta, continue to deflate.
The characteristics of technical solution of the present invention includes:
1. the present invention during automatic inflatable/air, does not need manual voltage regulation and controls each valve, and does not need root It transfinites according to whether micro-judgment temperature can lag, it is only necessary to set corresponding parameter in systems automatically by program inflation/deflation.
2. the present invention takes into account the double requirements of pressure feedback and temperature feedback, the number of results that temperature does not transfinite both ensure that According to also ensuring the process data that pressure does not transfinite.
3. the main difference of present invention control method relevant to other big volume automatic inflatable/airs is: needle of the present invention To pressure and temperature duplex feedback and bound demand, both needs to control pressure in control process, be also required to simultaneously Temperature is controlled (but control herein is control pressure bound, rather than rate of pressure change), it is ensured that pressure, temperature Without departing from the upper limit or lower limit, this method is not merely directed to some parameter, but is needed simultaneously in two temperature, pressure parameters Between be compared, so that the two parameters is all satisfied bound demand, co- controlling inflation/deflation process.
Detailed description of the invention
Fig. 1 is the automatic inflatable/air control system system composition schematic diagram based on temperature, pressure duplex feedback
Wherein, 1 temperature collecting cell is indicated；2 pressure acquisition units；3 indicate PLC control unit；4 indicate temperature & pressure Controller (settable temperature, pressure limit parameter)；(pressure regulation proportioning valve is used to control in the process of running 5 expression execution units The Pneumatic valve of gas on-off).
Specific embodiment
Introduced below is the specific embodiment as content of the present invention, below by specific embodiment to this The content work of invention further illustrates.Certainly, description following detailed description is only example not Tongfang of the invention The content in face but should not be understood as the limitation scope of the invention.
Fig. 1 shows the automatic inflatable/air control system system composition signal of the invention based on temperature, pressure duplex feedback Figure, wherein control system of the invention includes temperature collecting cell, pressure acquisition unit, PLC control unit, temperature & pressure control Device and execution unit processed, execution unit mainly include the gas control of the pressure regulation proportioning valve and control inflation/deflation for adjusting pressure Valve.
Automatic inflatable pneumatic control method based on temperature, pressure duplex feedback of the invention the following steps are included:
1) model selection and parameter setting: the inflation/deflation operating mode of satellite large-volume inflation/deflation product is set as according to temperature Degree feedback and pressure feedback, first progress model selection deflate comprising the inflation of big volume and big volume, carry out parameter later and set Fixed, parameter setting includes charge and discharge atmospheric pressure bound, temperature bound, and wherein pressure bound need to be wanted in strict accordance with actual product It asks and is set, there are certain deviants, such as product requirement between temperature bound parameter setting can be required with actual product 50 degree of the upper limit, when actual set, can be set to 48 degree, because the big volume pressure container heat transfer that some special materials are made into is slower, There is delay situation in heat and temperature transmitting, so need to consider that there are deviants when actual set temperature limiting, it is ensured that temperature is not It can transfinite, for heat transfer rate block of material, then can not consider.
2) connection inflation/deflation process pipe and satellite wait for air-charging and air-discharging system, ftercompction work and valve before carrying out valve opening Work is opened, satellite is completed and waits for docking for air-charging and air-discharging system and automatic inflatable/air system；
3) implement automatic inflatable/air process according to pressure feedback Controlling model and temperature feedback model, wherein to ensure to press Two power, temperature parameters are specifically sent to execution core component pressure regulation proportioning valve and adjust it within the scope of product requirement The instruction of aperture is anti-below for the pressure during inflation/deflation from that relatively rear lesser opening degree command of two models Feedback Controlling model and temperature feedback control model are described in detail:
A. inflation/deflation pressure process Controlling model:
Since inflation/deflation process medium fluid is in dynamic, the pressure acquisition device in charge and discharge feed channel measures numerical value one As be dummy values, pressure can decline (or rise) after stopping inflation/deflation, without the measured value before reaching.Based on this experience, After inflation/deflation process starts, pressure regulation ratio valve opening is set as the upper limit (or lower limit) automatically, product pressure is begun to ramp up later (or decline) controls valve closing, inflation/deflation pause when collecting product pressure value (dummy values) for the first time and reaching setting value；
At this point it is possible to acquire the true pressure value P of product1, and (example in the unit time can be obtained before pause inflation/deflation Such as: in 30s) the variable quantity △ P of product pressurev1, with PsAs the product pressure upper limit or low pressure limit, it is known that true pressure at this time The poor △ P of value and setting value1=Ps-P1。
When product true pressure value reaches product pressure setting value, i.e. P1=PsWhen, inflation/deflation process terminates；When product is true Real pressure value is not up to product pressure setting value, i.e. P1< Ps(deflating is Ps< P1) when, control valve is opened, and proportioning valve is kept The 80% of aperture before inflation/deflation process is suspended continues delay and carries out inflation/deflation (delay duration t1=1.1 × △ P1/△Pv1, single Position is s), this model of loop iteration, carries out several times row inflation/deflation again to product, finally make product pressure reach the upper limit or under Limit, and without departing from upper and lower limits.
B. inflation/deflation process temperature Controlling model:
Since there are time delays for temperature, to ensure that product temperature does not transfinite, Temperature Control Model is divided into two stages, It is T with product initial temperature0, inflation ceiling temperature is T1(deflation lower limit temperature is T2), the real-time temperature during product inflation/deflation Degree is Tc,
First stage is product real time temperature value of feedback TcGreater than T0And it is less than T0+ 80% (T1-T0) when (in deflation course, Product real time temperature value of feedback TcLess than T0And it is greater than T0- 80% (T0-T2))；
Second stage is real time temperature value of feedback TcGreater than T0+ 80% (T1-T0) and be less than T1When (in deflation course, product Real time temperature value of feedback TcLess than T0- 80% (T0-T2) and be greater than T2)。
First stage Controlling model are as follows:
After inflation/deflation starts, product temperature begins to ramp up (decline), when the variable quantity of product temperature in the unit time is less than When △ Ta, proportioning valve setting value starts to increase and (increases aeration speed or deflation speed, increase a proportioning valve minimum unit every time Aperture), the speed that product temperature rises (decline) is also increase accordingly；
When the variable quantity of product temperature in the unit time is greater than △ TaWhen, proportioning valve keeps current set value, at this time product Temperature still will continue to rise (decline), but rising (decline) speed can be gradually reduced；
When the variable quantity of product temperature in the unit time is greater than △ Tb(△Tb> △ Ta) when, proportioning valve setting value starts to subtract Small (reducing a proportioning valve minimum unit aperture every time), at this point, the speed that product temperature rises will further reduce；
When the variable quantity that product temperature is reduced to product temperature in the unit time is less than △ TbAnd it is greater than △ TaWhen (△ Tb> △ T > △ Ta), proportioning valve setting value no longer reduces, and keeps current set value, and the speed that product temperature rises will continue to subtract It is small, when the variable quantity for being decreased to product temperature in the unit time is less than △ TaWhen, the setting value of proportioning valve starts to increase again, successively Analogize, realizes the temperature control of first stage product.
Second stage Controlling model are as follows:
When the variable quantity of product temperature in the unit time is greater than △ TaWhen, reduce ratio valve opening (reduces a ratio every time Example valve minimum unit aperture) so that the variable quantity of product temperature in the unit time is less than △ Ta, when temperature reaches bound, close Proportioning valve, suspends inflation/deflation, and waiting temperature is risen again to T0+ 80% (T1-T0) when (T is back in deflation course0- 80% (T0-T2)), Readjustment ratio valve opening makes the variable quantity of product temperature in the unit time be less than △ Ta, continue to deflate.
4) in entire deflation course, global alignment Pressure control model and temperature are needed for the movement of ratio valve opening every time Two values that Controlling model provides, take wherein lesser value, to ensure the reliability and controllability of system, are deflated to setting pressure It closes later and adds valve and automatic inflatable/air system decompression, complete the automatic inflatable/air overall process of pressure and temperature duplex feedback.
Although a specific embodiment of the invention is described in detail and is illustrated above, it should be noted that We can make various changes and modifications above embodiment, but these are without departure from spirit of the invention and appended power Benefit requires documented range.

Claims (4)

1. the automatic inflatable pneumatic control method required based on pressure and temperature duplex feedback, comprising the following steps:
1) model selection and parameter setting: the inflation/deflation operating mode for setting satellite large-volume inflation/deflation product is anti-as foundation temperature Feedback and pressure feedback, parameter setting include the blowing pressure upper limit, temperature upper limit, wherein upper pressure limit according to actual product require into Row setting, temperature upper limit parameter setting and actual product have surplus between requiring；
2) process pipe connection is with gas source the implementation of supply measurement: connecting automatic inflatable/air system, process pipe and satellite large-volume charge and discharge Gas product adds valve, and gas source is input to the gas source end of automatic inflatable/air system；
3) it opens and adds valve: valve is added according to the preset program of automatic inflatable/air system unlatching product；
4) automatic inflatable/air: pressing force feedback control model and temperature feedback control model adjust pressure regulation in automatic inflatable/air system The aperture of proportioning valve is to automatically control aeration speed, if pressure reaches the setting upper limit or temperature reaches the upper limit, pause inflation, wait return Temperature continues inflation/deflation to secure threshold；
5) it closes and adds valve and automatic inflatable/air system decompression；
Wherein, the Controlling model of pressure feedback are as follows:
After inflation/deflation process starts, pressure regulation ratio valve opening is set as the upper limit or lower limit automatically, it is empty to be deflated to product pressure value It when value reaches setting value for the first time, controls valve closing, inflation/deflation pause；Acquire the true pressure value P of product1, filled with pause The variable quantity of product pressure is △ P in the unit time before deflatingV1, with PSAs the product pressure upper limit or low pressure limit, at this time very The poor △ P of real pressure value and setting value1=PS-P1；When product true pressure value reaches product pressure setting value, i.e. P1=PSWhen, Inflation/deflation process terminates；When product true pressure value is not up to product pressure setting value, i.e. P1< PSWhen, control valve is opened, than The 80% of aperture before example valve keeps inflation/deflation process to suspend, continues delay and carries out inflation/deflation, this model of loop iteration is completed to fill It deflates；
Wherein, temperature feedback control model includes first stage Controlling model and second stage Controlling model.
2. the automatic inflatable pneumatic control method described in claim 1 required based on pressure and temperature duplex feedback, wherein first Stage control model are as follows:
It is T with product initial temperature0, inflation ceiling temperature is T1, deflation lower limit temperature is T2, reality during product inflation/deflation Shi Wendu is TC, the first stage is product real time temperature value of feedback TCGreater than T0And it is less than T0+ 80% (T1-T0) when, deflation course In, product real time temperature value of feedback TCLess than T0And it is greater than T0- 80% (T0-T2), wherein after inflation/deflation starts, work as the unit time The variable quantity of interior product temperature is less than △ TaWhen, proportioning valve setting value starts to increase, the speed that product temperature rises or falls It increase accordingly；When the variable quantity of product temperature in the unit time is greater than △ TaWhen, proportioning valve keeps current set value, continues charge and discharge Gas；When the variable quantity of product temperature in the unit time is greater than △ TbWhen, proportioning valve setting value starts to reduce, at this point, product temperature The speed of rising will further reduce；When the variable quantity that product temperature is reduced to product temperature in the unit time is less than △ TbAnd Greater than △ TaWhen, proportioning valve setting value no longer reduces, and the speed that product temperature rises will continue to reduce, when being decreased to unit The variable quantity of interior product temperature is less than △ TaWhen, the setting value of proportioning valve starts to increase again, and so on, realize the first stage The temperature of product controls.
3. the automatic inflatable pneumatic control method described in claim 1 required based on pressure and temperature duplex feedback, wherein second Stage control model are as follows:
Second stage is real time temperature value of feedback TcGreater than T0+ 80% and be less than T1When, in deflation course, product real time temperature is anti- Feedback value TcLess than T0- 80% (T0-T2) and be greater than T2, wherein when the variable quantity of product temperature in the unit time is greater than △ TaWhen, subtract Small scale valve opening makes the variable quantity of product temperature in the unit time be less than △ Ta, when temperature reaches bound, close ratio Valve, suspends inflation/deflation, and waiting temperature is risen again to T0+ 80% (T1-T0) when and deflation course in be back to T0- 80% (T0-T2) when, Readjustment ratio valve opening makes the variable quantity of product temperature in the unit time be less than △ Ta, continue to deflate.
4. automatic inflatable pneumatic control method as described in any one of claims 1-3, wherein above-mentioned satellite large-volume inflation/deflation produces Product are tank or gas cylinder.
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